# smb: client: bound dirent name against end of SMB response in cifs_filldir

CVE record · `CVE-2026-93787`

- **Identifiers:** `CVE-2026-93787`
- **State:** Confirmed
- **Severity:** CVSS 8.1 High
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 24 Sept 2026
- **Updated:** 3 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 24 Sept 2026, 16:02 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

## Affected products, as the CNA wrote them

- Vendor: Linux. Product: Linux.
  - affected: `1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 4cb3d79beee0fecc739ce07af915d503f29ae557` (git)
  - affected: `1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before cf87ef1e62ed31a439064cef69d6eec38c68bd92` (git)
  - affected: `1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 6e3b965267b7313903baba2739992b1e2e92d540` (git)
  - affected: `1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 03003506c86f90312b0966283662c42fcab66e4b` (git)
  - affected: `1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before f8cf09a53a0dc1da298e9dd0ba5f21710cf119d6` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `2.6.12`
  - unaffected: `before 2.6.12` (semver)
  - unaffected: `6.1.189 to 6.1.*, inclusive` (semver)
  - unaffected: `6.6.158 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.111 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.53 to 6.18.*, inclusive` (semver)
  - unaffected: `7.2 to *, inclusive` (original_commit_for_fix)
  - Other versions: affected

## Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

## Severity and exploitation

- 8.1 High, CVSS 3.1: `CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H`, from CNA (Linux)

- **CISA KEV:** Not listed.
- **EPSS:** 0.0034, the 28th percentile, on 12 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

This record came from the full history of the CVE Program, published 24 Sept 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-93787](https://www.cve.org/CVERecord?id=CVE-2026-93787)
- [NVD: CVE-2026-93787](https://nvd.nist.gov/vuln/detail/CVE-2026-93787)

### References from the CNA

- <https://git.kernel.org/stable/c/4cb3d79beee0fecc739ce07af915d503f29ae557>
- <https://git.kernel.org/stable/c/cf87ef1e62ed31a439064cef69d6eec38c68bd92>
- <https://git.kernel.org/stable/c/6e3b965267b7313903baba2739992b1e2e92d540>
- <https://git.kernel.org/stable/c/03003506c86f90312b0966283662c42fcab66e4b>
- <https://git.kernel.org/stable/c/f8cf09a53a0dc1da298e9dd0ba5f21710cf119d6>

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.

## Check whether this affects you

This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it. Compare the affected versions above with what you run.

- With the agentprime MCP server (<https://api.agentprime.io/mcp>), `get_advisory` returns this record and `search_advisories` finds related ones. Setup: <https://agentprime.io/mcp.md>
- As JSON: <https://api.agentprime.io/v1/advisories/CVE-2026-93787>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-93787/>. Everything for agents: <https://agentprime.io/llms.txt>.